.navbar{
    font-size: 1.8rem;
  }

  .navbar-brand{
      font-size: 1.9rem;
  }

  .container{
      padding: 12px;
      
  }

  .art{
      
      text-align: center;
      border: 1px solid #000; 
      border-radius: 5px;
  }

  .libros{
      
      height: 280px;
  }

  .icon{
      width: 18px;
      height: 18px;
      margin: 6px;
  }
.btn{
    color: #000;
    
}

img{
    border-radius: 8px;
}